/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package edu.ccut.titan.component;

import java.util.List;

/**
 * Deposit a component execute() method parameter context.
 * <p>
 * include:
 * <li>1. parameter List.
 * <li>2. Exception
 * <li>3. TODO: something more?
 * 
 * @author LeslieGu
 * 
 */
public interface IParameterContext {

	/**
	 * Get parameter List
	 * 
	 * @return
	 */
	public List<IParameter> getParameters();

	/**
	 * Get No. i parameter
	 * 
	 * @param i
	 * @return
	 */
	public IParameter getParameter(int i);

	/**
	 * Get No. i parameter value
	 * 
	 * @param i
	 * @return
	 */
	public Object getParameterValue(int i);

	/**
	 * Set No. i parameter value
	 * 
	 * @param i
	 * @param value
	 */
	public void setParameter(int i, Object value);

	/**
	 * Add a {@link IParameter}
	 * 
	 * @param value
	 * @param classType
	 */
	public void addParameter(Object value, Class<?> classType);

	/**
	 * Set A Exception
	 * 
	 * @param throwable
	 */
	public void setException(Throwable throwable);

	/**
	 * Get Exception information
	 * 
	 * @return
	 */
	public Throwable getException();
}
